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Answer:
Now we can find the p value based in the alternative hypothesis and we got:
Step-by-step explanation:
Information given
represent the sample mean
represent the population standard deviation
sample size
represent the value to verify
z would represent the statistic
represent the p value
System of hypothesis
We want to verify if the true mean for this case is 64 or no, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
The statistic is given by:
(1)
The statistic for this case is given by:
Now we can find the p value based in the alternative hypothesis and we got:
Given:
Babysitting =$11/hours
Tutoring=$17/hours
Total work hours is=12 hours
Minimum many earn=$150
Work 2 houre for babysitting
so money earn is:
Earn amount is $ 22
then required amount is:
so tutoring time for reuired amount is:
so 7.52 hours is tutoring time and 2 hours babysitting then it 9.52 hours achieved minimum earn amount
so minimum hours for tutoring is 7.52 hours.